<template>
  <div class="table">
    <div class="container">
      <div class="handle-box">
        <el-button type="primary" size="mini" @click="delAll">批量删除</el-button>
        <el-input v-model="select_word" size="mini" placeholder="输入关键字搜索" class="handle-input"/>
        <el-button type="primary" size="mini" @click="centerDialogVisible = true">歌单添加</el-button>
      </div>
    </div>
    <el-table :data="data" border style="width: 100%" size="100%" height="680px" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="40"></el-table-column>
      <el-table-column label="歌单图片" align="center" width="110">
        <template slot-scope="scope">
          <div class="songList-img">
            <img :src="getUrl(scope.row.pic)" style="width: 100%"/>
          </div>
          <el-upload
            :action="uploadUrl(scope.row.id)"
            :on-success="handleAvatarSuccess"
            :before-upload="beforeAvatarUpload">
            <el-button size="mini" type="primary">更新图片</el-button>
          </el-upload>
        </template>
      </el-table-column>
      <el-table-column prop="title" label="标题" width="120" align="center"></el-table-column>
      <el-table-column prop="introduction" label="简介" align="center">
        <template slot-scope="scope">
          <p style="overflow: scroll;height: 100px">{{scope.row.introduction}}</p>
        </template>
      </el-table-column>
      <el-table-column prop="style" label="风格" width="120" align="center"></el-table-column>
      <el-table-column label="歌曲管理" width="110px" align="center">
        <template slot-scope="scope">
          <el-button size="mini" @click="songEdit(scope.row.id)">歌曲管理</el-button>
        </template>
      </el-table-column>
      <el-table-column label="评论" width="80" align="center">
        <template slot-scope="scope">
          <el-button size="mini" @click="getComment(scope.row.id)">评论</el-button>
        </template>
      </el-table-column>
      <el-table-column label="操作" width="150" align="center">
        <template slot-scope="scope">
          <el-button size="mini" @click="handleEdit(scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" @click="handleDelete(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <div class="pagination">
      <el-pagination
        layout="total,prev,pager,next"
        :current-page="currentPage"
        :page-size="pageSize"
        :total="tableData.length"
        @current-change="handleCurrentChange">
      </el-pagination>
    </div>
    <el-dialog title="添加歌单" :visible.sync="centerDialogVisible" width="400px" center>
      <el-form ref="registerForm" :model="registerForm" label-width="80px">
        <el-form-item label="标题" prop="title" size="mini">
          <el-input v-model="registerForm.title"></el-input>
        </el-form-item>
        <el-form-item label="简介" prop="introduction" size="mini">
          <el-input v-model="registerForm.introduction" type="textarea"></el-input>
        </el-form-item>
        <el-form-item label="风格" prop="style" size="mini">
          <el-input v-model="registerForm.style"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
         <el-button size="mini" @click="centerDialogVisible = false">取消</el-button>
         <el-button size="mini" @click="addSongList">确定</el-button>
      </span>
    </el-dialog>
    <el-dialog title="修改歌单" :visible.sync="editVisible" width="400px" center>
      <el-form :model="form" ref="form" label-width="80px">
        <el-form-item prop="title" label="标题" size="mini">
          <el-input v-model="form.title" placeholder="标题"></el-input>
        </el-form-item>
        <el-form-item prop="introduction" label="简介" size="mini">
          <el-input v-model="form.introduction" placeholder="简介" type="textarea"></el-input>
        </el-form-item>
        <el-form-item prop="style" label="风格" size="mini">
          <el-input v-model="form.style" placeholder="风格"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
                <el-button size="mini" @click="editVisible = false">取消</el-button>
                <el-button size="mini" @click="editSave">确定</el-button>
            </span>
    </el-dialog>

    <el-dialog title="删除" :visible.sync="delVisible" width="300px" center>
      <div align="center">删除不可恢复，是否确定删除？</div>
      <span slot="footer">
                <el-button size="mini" @click="delVisible = false">取消</el-button>
                <el-button size="mini" @click="deleteRow">确定</el-button>
            </span>
    </el-dialog>
  </div>
</template>

<script>
  import {getAllSongList,setSongList,updateSongList,delSongList} from "../api/index";
  import {mixin} from "../mixins";
  export default {
    mixins:[mixin],
    name: "SongListPage",
    data(){
      return {
        centerDialogVisible: false,
        editVisible: false,         //编辑弹窗是否显示
        delVisible: false,          //删除弹窗是否显示
        registerForm:{
          title:'',
          introduction:'',
          style:''
        },
        form:{      //编辑框
          id: '',
          title:'',
          introduction: '',
          style:''
        },
        tableData:[],
        tempData:[],
        select_word:'',
        currentPage:1,
        pageSize:5,
        idx: -1,          //当前选择项
        multipleSelection: [] //哪些项已打勾
      };
    },
    watch:{
      //搜索框里边的内容发生变化的时候，搜索结果table的内容跟着它一起变化
      select_word:function () {
        if(this.select_word == ''){
          this.tableData = this.tempData;
        }else{
          this.tableData = [];
          for(let item of this.tempData){
            if (item.title.includes(this.select_word)) {
              this.tableData.push(item)
            }
          }
        }
      }
    },
    created(){
      this.getData()
    },
    computed:{
      data(){
        return this.tableData.slice((this.currentPage-1)* this.pageSize,this.currentPage * this.pageSize)
      }
    },
    methods:{
      //弹出编辑页面
      handleEdit(row){
        this.editVisible = true;
        this.form = {
          id: row.id,
          title: row.title,
          introduction: row.introduction,
          style:row.style
        }
      },

      //保存编辑页面修改的数据
      editSave(){
        let params = new URLSearchParams();
        params.append('id',this.form.id);
        params.append('title',this.form.title);
        params.append('introduction',this.form.introduction);
        params.append('style',this.form.style);

        updateSongList(params)
          .then(res => {
            if(res.code == 1){
              this.getData();
              this.notify("修改成功","success");
            }else{
              this.notify("修改失败","error");
            }
          })
          .catch(err => {
            console.log(err);
          });
        this.editVisible = false;
      },
      //删除歌单
      deleteRow(){
        delSongList(this.idx)
          .then(res => {
            if(res){
              this.getData();
              this.notify("删除成功","success");
            }else{
              this.notify("删除失败","error");
            }
          })
          .catch(err => {
            console.log(err);
          });
        this.delVisible = false;
      },


      //获取当前页
      handleCurrentChange(val) {
        this.currentPage = val;
      },

      getData(){
        this.tempData = [];
        this.tableData = [];
        getAllSongList().then(res =>{
          this.tempData = res;
          this.tableData = res;
          this.currentPage = 1;
          // console.log(this.tableData)
        })
      },


      addSongList(){
        let params = new URLSearchParams();
        params.append('title',this.registerForm.title);
        params.append('pic','/img/songListPic/hhh.jpg');
        params.append('introduction',this.registerForm.introduction);
        params.append('style',this.registerForm.style);

        setSongList(params).then((res)=>{
          if (res.code == 1){
            this.getData();
            this.notify("添加成功","success");
          }else {
            this.notify("添加失败","error")
          }
        }).catch(err =>{
          console.log(err);
        })
        this.centerDialogVisible = false;
      },

      //  更新图片
      uploadUrl(id){
        return `${this.$store.state.HOST}/songList/updateSongListPic?id=${id}`
      },
      //转向歌曲管理页面
      songEdit(id){
        this.$router.push({path:'/ListSong',query:{id}})
      },
      //转向该歌单的评论列表
      getComment(id){
        this.$router.push({path: '/Comment',query:{id}})
      }
    },


  }
</script>

<style scoped>
  .handle-box{
    margin-bottom: 20px;
  }
  .songList-img{
    width: 100%;
    height: 80px;
    border-radius: 5px;
    margin-bottom: 5px;
    overflow: hidden;
  }

  .handle-input{
    width:300px;
    display: inline-block;
  }
  .pagination{
    display: flex;
    justify-content: center;
  }
</style>

